isotrope
/ˈaɪsoʊˌtroʊp, -ˌtrōp/Definitions
1. noun
A solid whose density is the same in all directions; an isotropic solid.
“The physicist studied the isotrope properties of the newly discovered crystal.”
2. noun
In optics, a point at which a beam of light passes through a lens or mirror with no change in direction; an isotropic point.
“The isotrope point on the lens focused the light perfectly on the screen.”